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<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <!-- 剩余参数 -->
    <script>
        const sum = (...args) => {
            let totle = 0;
            args.forEach(item =>totle +=item);
            return totle
        };
        console.log(sum(10,20));
        console.log(sum(10,20,30));

        //剩余参数和结构配合使用
        let ary1 = ['张三','李四','王五'];
        let [s1,...s2] = ary1;
        console.log(s1);   
        console.log(s2);
    </script>
</body>
</html>